Accession Number : AD0813907

Title :   MATERIALS INVESTIGATION, SNAP 50/SPUR PROGRAM. CREEP PROPERTIES OF A TZM FORGING AT 1900 F.

Descriptive Note : Technical rept. Jan 65-Sep 66,

Corporate Author : GARRETT CORP PHOENIX AZ AIRESEARCH MFG DIV

Personal Author(s) : Kovacevich, E. A.

Report Date : DEC 1966

Pagination or Media Count : 19

Abstract : Creep specimens from a pancake forging of TZM alloy (Mo-0.5Ti-0.08Zr) were tested in vacuum furnace creep machines at a temperature of 1900 F, and at stresses from 38 ksi to 54 ksi. The forging was found to have variations in structure due to differences in plastic working during forging, with the result that differences in creep properties of specimens from the top and center of the forging were observed. Negative creep was also observed at low stresses. A design curve was prepared for the forging specimens, however considerable data scatter is present due to the inconsistencies noted. (Author)

Descriptors :   (*CREEP, MOLYBDENUM ALLOYS), HIGH TEMPERATURE, FORGING, TURBINE WHEELS, MICROSTRUCTURE.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE